If you're asking about shaft strength, the 8.25 is much closer in strength to the D35 than the D44, not to mention it uses C-clips. D35 shafts (IIRC) are 1.17", 8.25 shafts are 1.21", and D44 are 1.31". The 8.25 axle tubes are larger than than both of the other axles, but I don't know how thick the tube wall is.
Tom